I have a confession that every reviewer I've ever worked with already knows from painful experience: I am pretty good at writing code and genuinely atrocious at explaining it after the fact. A typical branch of mine ends with a commit log like 'wip', 'fix', 'actually fix', 'address review', 'fix typo', and 'fix typo again', followed by a pull request titled, with tremendous and unearned confidence, 'updates'. My reviewers would open it, see a 600-line diff sitting under a one-word description with no test plan, and visibly age in real time. One of them started leaving a single comment — 'what is this?' — which was fair.
The maddening part is that I wasn't being lazy out of malice. The information a reviewer needs was all there: in the commits, in the diff stat, in the linked ticket. I just hated writing the connective prose that ties it together, the 'here's what changed and why and how to check it' narrative. By the time the code worked, my brain had filed the branch under 'done' and writing three paragraphs about it felt like homework after the test was already over.
Outsourcing the part I'm bad at
So I started ending every branch with the Generate a Helpful PR Description from the Branch's Commits prompt. The workflow is three pastes: `git log main..HEAD --oneline` for the commit log, `git diff --stat` for the shape of the change, and the ticket URL. I picked Grok 4.3 for this on purpose. A PR description is not the place for a model to wax philosophical or pad with 'this comprehensive change' filler — it needs to be punchy, fast, and skimmable, because reviewers skim. Grok's terse, slightly casual register is exactly the voice a good PR body wants, and the prompt caps the whole thing under 200 words so it can't sprawl.
What it does that I won't
The single most important instruction in the prompt is 'synthesize, don't list.' A lazy tool would just reformat my commit log into bullets, which would faithfully reproduce my mess. This one is told to collapse the noise and group by area, and it does.
- It folded 'wip / fix / actually fix' into one clean bullet — 'Add retry with exponential backoff to the webhook handler' — which is what those three embarrassing commits actually amounted to
- The Risk & rollback line correctly spotted a config flag mentioned in my diff stat and wrote 'gated behind WEBHOOK_RETRY_ENABLED; flip the flag off to revert,' which is genuinely the real rollback plan, not a generic 'git revert'
- When my commits showed zero test changes, it wrote 'Test plan: needs author input' instead of fabricating a plausible-sounding fake one — I have deep respect for a tool that refuses to lie on my behalf
- It grouped six scattered commits across three files into three area bullets, so the reviewer sees the shape of the change instead of its chronology
- It linked the ticket in the Why section automatically, so the reviewer has the context one click away instead of having to hunt for it in the issue tracker
That last point matters more than it sounds. Half of review friction is just missing context — the reviewer doesn't know why a change exists, so they either approve blindly or interrogate you in comments for a day. A description that answers 'what, why, how do I check it, and how do I undo it' up front removes an entire round-trip of back-and-forth before the review even starts.
The five minutes of honesty it forces
That 'needs author input' nudge turned out to be the actual value, more than the time saved. It's a polite, machine-generated way of telling me I'm about to ship untested code, and seeing it sitting there in the draft shames me into actually adding a test plan I would otherwise have skipped with a clear conscience. The output is a draft, not a rubber stamp — I read it, fill in the test plan it flagged, fix any nuance it got slightly wrong, and post. Total time is about ninety seconds, versus the ten minutes of staring I used to budget for and then quietly skip, leaving the 'updates' PR to fend for itself.
My review turnaround dropped noticeably and immediately once reviewers stopped having to reverse-engineer my intent from a raw diff — turns out people review faster when they know what they're looking at. Grab the Generate a Helpful PR Description from the Branch's Commits prompt on Prompt Dock and run it at the end of your next branch. And if your commit log itself is the kind of mess mine was, clean it up first with my Turn a Git Diff into a Clean Conventional Commit Message prompt — feed the synthesis good raw material and the description practically writes itself.